Dttst-deflector fob



UNITED sTATns PAENT oFFic.

JAS. M. COOK, OF TAUNTON, MASSACHUSETTS.

DUST-DEFLECTOR FOR WINDOWS OF RAILROAD-CARS.

Specification of Letters Patent No. 13,676, dated October 16, 1855.

To all whom it may concern:

Be it known that I, JAMES M. COOK, of Taunton, in the county of Bristol and State of Massachusetts, have invented an Imf` proved Contrivance or Device for Ventilating Railway-Carriages; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, letters, figures, and references thereof.

In the drawings Figure l, denotes a front l elevation of one of my improved ventilators.

F ig. 2, is a side view of the same while Fig. 3, is a transverse section of it.

My invention although somewhat analogous to an improved contrivance for preventing dust, sparks or cinders from entering the windows of a railway carriage under circumstances as set forth in Letters Patent granted to me on the nineteenth day of April A. D. 1853, yetdiffers materially therefrom.

In carrying out or constructing my invention, I make use of a semicircular or arched deflector or, dust guard A, see Figs. l, 2, and 3, it being a thin bent strip of metal having' one edge curved as seen at a, in said figures, and the other *or inner edge fastened to a circular flanged annulus B formed with a. flange or lip, b, Z), extending entirely around it and arranged with respect to it as seen in the drawings. The said annulus B, is placed with its lip or flange on what I term the stationary supporting ring C which is formed with a short neck, c, extending within the annulus B, and serving to support it in position, the flanged annulus being applied to the neck c so as to revolve thereon and be maintained against, the stationary annulus C, by a series of overlapping projections D, D, D, extended from the annulus C, and over the flange of the annulus, B as seen in the drawings.

A rod E, is carried diametrically across the ring B, and firmly fastened thereto at its ends such rod serving the` purpose of a handle, lever or means, by which the ring B, and the deecting guard A, may be rotated simultaneously on their stationary annulus.

It is intended that the article so made shall be fixed flatwise to the vertical side of a railway carriage in some convenient position, generally speaking either above, or aside of one of its windows and against an opening leading through such side and into the carthe axis of the said opening being coincident with that of the neck hereinbefore mentioned, when the diameter of the opening is made to correspond with that of the said neck. In such a position the supporting ring or annulus is to be fastened to the carriage. Under such circumstances whatever may be the direction in which the carriage may be moved, whether it be forward or backward or whatever may be the direction of the external aerial current, whether it be upward or downward, horizontally or inclined to the horizon, the defiector may be rotated and fixed in position to operate to the best advantage, the current of air impinging against its external or outer surface and creating a current through the opening Cr, in a manner well known. lVhile the deflector serves to generate the Ventilating current leading out- Yward from the carriage it also serves to exclude dust, sparks or cinolers from entrance into the opening' Cr.

I do not claim the application of a curved deflector on the outside ofthe window opening of a railway carriage; nor making the same to extend under the window and up one side thereof, but What I do claim as my improvementisrIhe rotary deflector or ventilator constructed. and made to operate substantially in manner and for the purpose as specified.

In testimony whereof, I have hereunto set my signature this fourteenth day of August JAS. M. COOK. V'Vitnesses:

W. F. RICE, I?. P. HALE, Jr. 

